I did some research into that device & not only will it work with a phone, but it will work with an HT. So here is exactly what I was talking about. Only problem is, it cost a bit more than I'd like! But it's still a solution. (now if it actually works - ebay, you know)

It can be done. Look at pg 73 of the manual. This is right out of pg 73.

SKY COMMAND II (K-TYPE ONLY)The Sky Command II allows you to remotely control the TS-480HX/ SAT transceiver from a separate location. If you have more than 2 TH-D7A and/ or TM-D700A transceivers, you can perform Sky Command II operation to remotely control the HF/ 50 MHz band of your TS-480 transceiver.

You will use one transceiver (TH-D7A or TM-D700A) as a remote control unit, called a “Commander”. The other VHF/ UHF transceiver (TH-D7A or TM-D700A) with the TS-480 transceiver is called the“Transporter”. This TH-D7A or TM-D700A transceiver will function as an interface between the Commander (a remote control unit) and the HF/ 50 MHz band of the TS-480 transceiver.

This system allows you, for example, to watch for and hunt DX while washing your car, or to operate the HF transceiver while relaxing in your car, living room, or patio, instead of actually operating inside your shack.

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